| 摘要 |
<p>PURPOSE:To eliminate necessity to judge whether supplied input data corresponds to a prescribed code or not at a processing means side, and to lighten the processing burden of a processing means by supplying prescribed data to the processing means in response to an instruction by the processing means. CONSTITUTION:A data supplying means 121 decides whether the input data and the prescribed data stored in a storage means 111 coincide with each other or not, and in the case of discordance, it supplies the input data to the processing means 101, and in the case of coincidence, it supplies the input data to a holding means 122. Accordingly, the prescribed data is supplied to the processing means 101 asynchronously with the timing of the supply of the prescribed data to the data supplying means 121 in response to the instruction by the processing means 101. Thus, it is unnecessary to judge whether the supplied input data corresponds to the prescribed code or not at the processing means 101 side, and the processing burden of the processing means can be lightened.</p> |
